Commit 9c7c9e10 authored by Mathias Nyman's avatar Mathias Nyman Committed by Lipeng Sang
Browse files

xhci: Remove device endpoints from bandwidth list when freeing the device

stable inclusion
from stable-v5.10.153
commit 678d2cc2041cc6ce05030852dce9ad42719abcfc
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I64YCA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=678d2cc2041cc6ce05030852dce9ad42719abcfc



--------------------------------

commit 5aed5b7c upstream.

Endpoints are normally deleted from the bandwidth list when they are
dropped, before the virt device is freed.

If xHC host is dying or being removed then the endpoints aren't dropped
cleanly due to functions returning early to avoid interacting with a
non-accessible host controller.

So check and delete endpoints that are still on the bandwidth list when
freeing the virt device.

Solves a list_del corruption kernel crash when unbinding xhci-pci,
caused by xhci_mem_cleanup() when it later tried to delete already freed
endpoints from the bandwidth list.

This only affects hosts that use software bandwidth checking, which
currenty is only the xHC in intel Panther Point PCH (Ivy Bridge)

Cc: stable@vger.kernel.org
Reported-by: default avatarMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Tested-by: default avatarMarek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Signed-off-by: default avatarMathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20221024142720.4122053-5-mathias.nyman@intel.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: default avatarLipeng Sang <sanglipeng1@jd.com>
parent af797ae6
Loading
Loading
Loading
Loading
0% Loading or .
You are about to add 0 people to the discussion. Proceed with caution.
Please to comment